DOM - DocumentType Object Attribute - publicId


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The attribute publicId returns the public identifier of the external subset.

Syntax

Following is the syntax for the usage of the publicId attribute.

document.doctype.publicId;

Example

notation.xml contents are as below −

<?xml version = "1.0" encoding = "UTF-8" standalone = "no"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" 
   "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">

<address id = "firstelement">
   <name>Tanmay Patil</name >
   <company>TutorialsPoint</company>
   <phone>(011) 123-4567</phone>
</address>

Following example demonstrates the usage of the publicId attribute −

<!DOCTYPE html>
<html>
   <head>
      <script>
         function loadXMLDoc(filename) {
            if (window.XMLHttpRequest) {
               xhttp = new XMLHttpRequest();
            } else // code for IE5 and IE6 {
               xhttp = new ActiveXObject("Microsoft.XMLHTTP");
            }
            xhttp.open("GET",filename,false);
            xhttp.send();
            return xhttp.responseXML;
         }
      </script>
   </head>
   <body>
      <script>
         xmlDoc = loadXMLDoc("/dom/notation_xhtml.xml");
         document.write("<b>publicid :</b> "+xmlDoc.doctype.publicId);
      </script>
   </body>
</html>

Execution

Save this file as documenttype_publicid.html on the server path (this file and notation.xml should be on the same path in your server). We will get the output as shown below −

publicid : -//W3C//DTD XHTML 1.1//EN 
dom_documenttype_object.htm

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